Ora-12537: Tns:Connection Closed When RAC Instance is Shutdown Via Srvctl (Doc ID 457491.1)

Last updated on OCTOBER 31, 2016

Applies to:

Oracle Net Services - Version 9.2.0.2 to 11.2.0.3 [Release 9.2 to 11.2]
Information in this document applies to any platform.
***Checked for relevance on 19-NOV-2014***

Symptoms

When testing the connect time failover in RAC environment by firing a burst of SQL*Plus connections, a few of the new client connections receive ORA-12537: TNS:connection closed.  This might occur if the Srvctl utility is used to shut down the instance.

Cause

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